- Tytuł:
- Exposure to Methyl Methacrylate and Its Subjective Symptoms Among Dental Technicians, Tehran, Iran
- Autorzy:
-
Golbabaei, F.
Mamdouh, M.
Jelyani, K. N.
Shahtaheri, S. J. - Powiązania:
- https://bibliotekanauki.pl/articles/90960.pdf
- Data publikacji:
- 2005
- Wydawca:
- Centralny Instytut Ochrony Pracy
- Tematy:
-
methyl methacrylate
dental technicians
dental laboratories
health symptoms
time-weighted average concentration
peak concentration
zagrożenia chemiczne
służba zdrowia
usługi stomatologiczne
pyły
narażenie zawodowe - Opis:
- Exposure to methyl methacrylate (MMA), total dust and health symptoms were investigated in 20 dental laboratories located in Tehran, Iran. Time-weighted average (TWA) of MMA and peak concentrations were determined, using XAD-2 tubes followed by GC-ID analysis. Total dusts were evaluated gravimetrically. Health symptoms were asked using a questionnaire. TWA for technicians with direct and indirect exposure to MMA were 327.28 ± 79.42 and 282.9 ± 41.84 mg/m3, respectively. Peak concentration of MMA for those technicians were 337.0 ± 36.81 and 328.88 ± 45.40 mg/m3, respectively. There were no significant differences between TWA of MMA and peak concentration in different weekly workdays; however, within-day variations were observed (P < .05). TWA of MMA and peak concentration correlation with the laboratory volume were 0.61–0.65. Dust exposure of technicians was 2.35 ± 2.70 mg/m3. Cough and skin dryness were the common health symptoms. Smoking and asbestos exposure history were factors influencing cough prevalence (p < .05). It is concluded that the current Short-Term Exposure Limit (STEL) is not low enough to protect technicians against the adverse effects caused by MMA.
- Źródło:
-
International Journal of Occupational Safety and Ergonomics; 2005, 11, 3; 283-289
1080-3548 - Pojawia się w:
- International Journal of Occupational Safety and Ergonomics
- Dostawca treści:
- Biblioteka Nauki
Artykuł